JPH0127506B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette insertion device for a magnetic recording/reproducing apparatus, and an object thereof is to provide a device which has a simple structure and does not require horizontal adjustment of a cassette storage case.

First, a conventional configuration will be explained based on FIGS. 1 and 2. 1 is a cassette storage case, 2 and 3 are pins provided in the cassette storage case 1, 4 and 5 are side plates, 6
7 is a connecting rod rotatably supported between the side plates 4 and 5; 7 is a rotation fulcrum pin implanted in the side plates 4 and 5;
A rotary lever 8 has one end fixed to the connecting rod 6 and the other end rotatably supported by the pin 2, and 9 has one end supported by the rotary fulcrum pin 7 and the other end rotatably supported by the pin 3. 10 is a stopper pin implanted in a part of the rotating lever 9; 11 is a spring for biasing the rotating lever 9 in a counterclockwise direction; 1;
2 is a stopper lever for holding the stopper pin 10 in a predetermined position and regulating the counterclockwise rotation of the rotary lever 9; 13 is a rotational fulcrum for the stopper lever 12; and 14 is for urging the stopper lever 12 in the counterclockwise direction. It is a spring for The rotating lever 8 is separated into a main lever 15 and an auxiliary lever 16, the length of which can be adjusted, and is fixed with a screw.

Next, the adjustment method and operation of such a conventional example will be explained. First, regarding the adjustment method, when the cassette 17 is inserted into the device, the cassette 17 is supported on the board 18, and the lower surface of the cassette 17 and the cassette storage case 1 are
A slight gap 20 is formed between the base plate and the bottom plate. However, since this gap 20 cannot be increased due to miniaturization or the like, it is necessary to adjust the cassette storage case 1 to be approximately horizontal. To do this, the front and back of the cassette storage case 1 in the AB direction in FIG.
The cassette storage case 1 is held horizontally against the bottom surface of the side plates 4 and 5, and in this state, the left and right main levers 15 and the sub levers 16 are screwed together. I'm trying to fix it.

Next, to explain the operation when inserting and ejecting the cassette storage case 1, when the cassette storage case 1 is installed, the rotation levers 8 and 9 rotate clockwise by pushing down the cassette storage case 1. At the end of the insertion, the stopper pin 10 comes into contact with the inclined portion 12a of the stopper lever 12, and the stopper lever 12 rotates clockwise. When the cassette storage case 1 is further pushed down, the stopper lever 12 rotates counterclockwise and the stopper lever 12
The stopper pin 10 engages with the concave portion 12b, and the cassette storage case 1 is held in a predetermined position. When ejecting, the stopper lever 12 is rotated clockwise by an ejecting means (not shown),
This is done by disengaging the stopper pin 10 from the recess 12b of the stopper lever 12. At this time, the spring 11 rotates the rotary lever 9 counterclockwise, and the cassette storage case 1 rises accordingly. The above is a conventional cassette insertion device, but as mentioned above, it is necessary to horizontally adjust the cassette storage case 1, and it is necessary to provide an adjustment function on a part of the rotating lever 8 for adjustment. This adjustment part has a drawback, since it is subject to the force and impact force associated with the movement of the cassette storage case 1 when it is raised and lowered, so it needs to have sufficient strength and is heavy in weight.

The present invention has been made in order to deal with such a problem, and has a first end, which has one end loosely fitted to a support shaft provided on the cassette storage case side, and the other end rotatably supported on the main body side. A second lever is provided on the first lever, and biases in the insertion direction when the cassette storage case is stored, and biases in the opposite direction to the insertion direction when the cassette storage case is not stored. a biasing means, one end of which engages with the cassette storage case;
A connecting lever that raises the cassette storage case substantially in parallel with the push-up operation of the push-up lever, cassette support means that supports the cassette at the cassette insertion position, and a plurality of support means that support the cassette storage case. and the support shaft and one ends of the first and second levers are loosely fitted, and the cassette storage case is configured to uniformly abut against the plurality of support means by the urging force of the urging means. It is characterized by this. The drawings (Figures 3 to 5) showing an example of implementing the present invention are as follows:
The explanation will be based on. In the figure, 21 is a cassette storage case, and 22 and 23 are cassette storage cases 2.
Pins planted on both sides of 1, 24 is a side plate, 25,
Reference numeral 26 indicates a rotation fulcrum pin embedded in each of the left and right side plates 24, 27 indicates a rotation lever having one end loosely fitted into the pin 22 and the other end rotatably supported by the rotation fulcrum pin 25, and 28, one end thereof It is a rotating lever that is loosely fitted onto the pin 23 and whose other end is rotatably supported by a rotating fulcrum pin 26. 29 is a pin implanted in the rotation lever 28;
30 is a pin implanted in the side plate 24, 31 is a lifting spring, and winding parts 32, 3 are provided at both ends of this lifting spring 31.
3 is formed, and the winding portions 32 and 33 are rotatably supported by the pins 29 and 30, respectively. 34 is the board of the device, 35 is the left and right side plate 2
a connecting rod rotatably supported between the four
36 is a connecting lever having one end fixed to the connecting rod 35 and a long hole 37 provided at the other end such that the pin 23 is loosely fitted into the long hole 37; 38 is an eject button; 39 is an eject lever; 40 is the side plate 24
41 is a bent portion of the eject lever 39, 42 is an eject lever biasing spring for biasing the eject lever 39 clockwise, and a winding portion 43 is a connecting rod. 35, one end is hung on the bending part 41 of the eject lever 39, and the other end is hooked on the bending part 40 of the side plate 24, and the clockwise rotation of the eject lever 39 is caused by the bending of the side plate 24. It is regulated by Section 40. 44 is a push-up lever;
45 is a push-up pin; 46 and 47 are bent portions of the push-up tray 44; 48 are bent portions of the eject lever 39;
9 is a push-up lever biasing spring for biasing the push-up lever 44 in a counterclockwise direction; 51 and 52 are board 34;
53 and 54 are the supports for the cassette storage case 21 provided on the base plate 34, and 55 is a spring for urging the cassette storage case 21 and the rotating lever 27 in the direction of pulling them together. The cassette storage case 21 is biased clockwise by the spring 55 using the pin 23 as a pivot point.

Next, to explain the operation of the present invention, when the upper surface of the cassette storage case 21 is pushed down from the state shown in FIG.
8 rotates counterclockwise, and lift spring 31
It also gradually rotates. As the rotation progresses and the pin 29 comes below the line connecting the pin 30 of the side plate 24 and the rotation fulcrum pin 26, the opening force of the lifting spring 31 urges the rotation lever 28 counterclockwise. Thereafter, the cassette storage case 21 is lowered by the force of the lifting spring 31. As it descends, the cassette 17 is received by the receivers 51 and 52,
The cassette storage case 21 is received by receivers 53 and 54. At this time, since there is some play in the connection between the pin 22 provided on the cassette storage case 21 and the rotation lever 27, which allows the cassette storage case 21 to rotate slightly, the cassette storage case 21 resists the force of the spring 55. It is rotated using the pin 23 as a rotation fulcrum,
The bottom of the cassette storage case 21 and the receivers 53, 54
are brought into close contact with each other by the pressing force of the lifting spring 31.

Next, I will explain the operation when ejecting.
By pressing the eject button 38, the eject lever 39 is rotated counterclockwise about the connecting rod 35, and the push-up lever 44 is rotated accordingly.
are also driven at the same time. When the push-up lever 44 rises, the push-up pin 45 of the push-up lever 44 connects to the connection lever 3.
6, the connecting lever 36 is rotated counterclockwise, and the pin 23 is driven upward by the elongated hole 37 of the connecting lever 36. As a result, the cassette storage case 21 gradually rises, and when the pin 29 comes above the line connecting the rotation fulcrum pin 26 and pin 30 of the side plate 24, the lifting spring 31 causes the rotation lever 28 to move clockwise. This acts as a rotating force and pushes up the cassette storage case 21. At this time, the cassette storage case 21 is in contact with the receivers 53 and 54 when inserted, but as it rises, it rotates clockwise due to the biasing force of the spring 55, and this rotation is caused by the pin 23.
is used as a fulcrum and is rotated until the pin 22 comes into contact with the inner wall of the pin insertion hole of the rotation lever 27. In other words, in the above configuration, when the cassette storage case 21 is raised and lowered, it swings slightly due to play in the joint between the rotation lever 27 and the cassette storage case 21, but when inserted, the cassette 17 is moved against the receiver 51 by the pressing force of the lifting spring 31. , 52. Since the cassette storage case 21 is pushed down until it comes into contact with the receivers 53 and 54, there is an advantage that there is no need to horizontally adjust the cassette insertion device alone as long as the height of the receivers 51 to 54 on the board 34 is controlled. be.

The present invention also includes, for example, a rotating lever that connects the cassette storage case and the main body side, and a sub-assembly that has a rotating fulcrum on the rotating lever and has one end rotatably connected to the cassette storage case and the other end to the main body side. Even in the case of a cassette insertion device in which the cassette storage case is raised and lowered substantially in parallel using a rotation lever, this can be easily implemented by providing play in the connection between the sub-rotation lever and the cassette storage case.

The cassette insertion device of the magnetic recording/reproducing apparatus of the present invention can be implemented as described above, and the following effects can be obtained.

This eliminates the trouble of making the cassette insertion device into a unit and adjusting the cassette storage case horizontally in the unit state as in the past, and the adjustment can be made very easily.

Since there is no need to adjust the cassette insertion device alone, there is no need to make it into a unit. Furthermore, even if it is made into a unit, there is no need to provide rigidity to the unit alone.

Since there are no adjustment parts, the structure is very simple and the cost is low. Further, it is no longer necessary to consider positional deviations due to force and impact force when the adjustment section is moved up and down.

[Brief explanation of drawings]

Fig. 1 is a side view of a conventional cassette insertion device, Fig. 2 is a front view thereof, Figs. 3 to 5 show an example of the implementation of the present invention, and Fig. 3 is a side view of the cassette insertion device. , FIG. 4 is an enlarged plan view of the main part, and FIG. 5 is an explanatory diagram of the operation. 17...cassette, 21...cassette storage case,
22, 23... Pin, 24... Side plate, 25, 26... Rotating fulcrum pin, 27, 28... Rotating lever, 29, 3
0... Pin, 31... Lifting spring, 34... Board, 35...
Connecting rod, 36... Connecting lever, 38... Eject button, 39... Eject lever, 42... Spring, 4
4... Push-up lever, 45... Push-up pin, 49... Spring,
51-54...Receiver, 55...Spring.

Claims (1)

[Claims] 1. First and second levers 27 and 2, one end of which is loosely fitted to the support shafts 22 and 23 provided on the side of the cassette storage case 21, and the other end of which is rotatably supported on the main body side.
8 and a biasing member provided on the first lever 27, which biases in the insertion direction when the cassette storage case 21 is stored, and biases in the opposite direction to the insertion direction when the cassette storage case 21 is not stored. a connecting lever 36 whose one end engages with the cassette storage case 21 and which raises the cassette storage case 21 substantially in parallel based on the push-up operation of the push-up lever 44; cassette support means 51 and 52 for supporting the cassette storage case 21; and a plurality of support means 5 for supporting the cassette storage case 21.
3, 54, and when the support shafts 22, 23 and one ends of the first and second levers 27, 28 are loosely fitted, the cassette storage case 21 is moved by the urging force of the urging means 31. Multiple support means 5
A cassette insertion device for a magnetic recording/reproducing device configured to uniformly abut the cassettes 3 and 54.